Use Python To Access Serial Ports - Digi TX54 User Manual

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builtins.Exception(builtins.BaseException)

builtins.object

5. Use Ctrl-D to exit the Python session. You can also exit the session using exit() or quit().

Use Python to access serial ports

You can use the Python serial module to access serial ports on your TX54 device that are configured

to be in Application mode. For example, you can configure USB ports to function serial ports and

interact programmatically with those ports. See

configuring a serial port in Application mode, and see

configuring USB ports on the device to function as serial ports.

To use Python to access serial ports:

1. Log into the TX54 command line as a user with shell access.

Depending on your device configuration, you may be presented with an Access selection

menu. Type shell to access the device shell.

2. Determine the path to the serial port:

# ls /dev/serial/

3. At the shell prompt, use the python command with no parameters to enter an interactive

Python session:

Python 3.6.13 (default, May

[GCC 8.3.0] on linux

Type "help", "copyright", "credits" or "license" for more information.

4. Import the serial module:

>>> import serial

5. You can now perform operations on the serial port. For example, to write a message to the

serial port:

>>> s = serial.Serial("/dev/serial/USB_port1", 115200)

>>> s.write(b"Hello from USB serial port")

6. Use Ctrl-D to exit the Python session. You can also exit the session using exit() or quit().

TX54 User Guide

HIDException

Use Python to access serial ports

Configure Application mode

Add a USB serial port

9 2021, 22:49:59)

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